graficas

1. 𝑥2
9
+
𝑦2
16
+
𝑧2
9
= 1

2. 4𝑥2
− 𝑦2
+ 4𝑧2
= 4

3. 15𝑥2
− 4𝑦2
+ 15𝑧2
= −4

4. 𝑦2
= 4𝑥2
+ 9𝑧2

5. 4𝑥2
− 4𝑦 + 𝑧2
= 0

6. 4𝑥2
− 𝑦2
+ 4𝑧 = 0

7. 𝑦 = 5

8. 𝑦2
+ 𝑧2
+ 0𝑥2
= 9

9. 𝑥2
+ 𝑧2
+ 0𝑦2
= 25

10. 𝑧 + 0𝑥 + 0𝑦 = 2

11. 𝑥2
− 𝑦 + 0𝑧2
= 0

12. 𝑦2
+ 𝑧 + 0𝑥 = 6

13. 4𝑥2
+ 𝑦2
+ 0𝑧 = 4